你可能感興趣的試題

Soot blowers should be used in proper sequence so that（）

A.excess stresses will not be set up in the boiler
B.the decks will not be covered with soot
C.the soot will be swept toward the uptakes
D.there will not be a loss of steam pressure

單項選擇題

The valve that prevents water from backing out of the boiler into the feed line is the（）.

A.bottom-blow valve
B.skin valve
C.feed-check valve
D.feed-stop valve

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What is the first thing you would check on taking over a watch?（）

你可能感興趣的試題

Soot blowers should be used in proper sequence so that（）

The valve that prevents water from backing out of the boiler into the feed line is the（）.